Spherical lenses suffer from A) both spherical and chromatic ...

[geoffrey]

Spherical lenses suffer from
 
  A) both spherical and chromatic aberration.
  B) spherical aberration, but not chromatic aberration.
  C) neither spherical nor chromatic aberration.
  D) chromatic aberration, but not spherical aberration.

Question 2

The lowest tone to resonate in an open pipe of length L is 400. Hz. What is the frequency of the lowest tone that will resonate in a closed pipe of length 2L?
 
  A) 200. Hz
  B) 1.60 kHz
  C) 100. Hz
  D) 400. Hz
  E) 0.800 kHz

[Brummell1998]

Answer to Question 1

A

Answer to Question 2

A

[geoffrey]

TYSM

[Jsherida]

Thanks for the timely response, appreciate it